Fob internal-combustion engines



A. 0. DADY. .VALVE FOR :NTERNAL coMBusloN ENGINES.

APPLICATION FILED JAN-2,1918.

Patented J une 10, 1919.

ATENT VALVE F0?, NTIERNAL-OMBUSTION ENGINES.

Specification of Letters Patent.

Patented lane Eipplieeterefile Zi'emiary FP., 1918. Serial No. 209,889.

lle it known that Il, n'rnnn Dient:7V

a citizen nl' the United States, residing at New York, in the county nli New li'erk and tritate, of Sew "inrit, have invented a certain new anal inaei'ni improvement in Yalrez-a 'ior lnlernal-Cenibuetion Engines, ol' which the following a 'nll.I clear, concise, and exact iler-ieription., reference being hail lo the m'conzpaiwingf drawings, 'forming' a part or' thin speciiieaiion.

'l'hirwy invention rela@ is to improvements in Valves 'for internal combustion engines, and ia partienlarly concerned with hollow exhaat valves of the eri-called mercury cooled type in which a small quantity ol nierenry helil in the heail of' the valve is vaporizetl heini hecoinee heated, the er? upon 'the walls of the 1w. .nraeil to 'the valve head. lie. .moet eiicien; coolingr elf this type il; is necessary lo proriie nieuwe for noir-lily"radiating the heat 'from the valve eterni. l'arioas expelliens hare en employed for this pin-pose, .l ohjeeta elf any inw: ien are, lirst,

le a radiator having intimate oonae'- .fih the valve LViena, whereby the re- :in'anee to the radiation eamdnetion orf heat reduced to a, minimizing second, to provide a. radiator ailapteil te he iletaehahly connected n'it., Y e valve raein; third, to pro vide, a radiator o: the class fl-eneriberl which, will not materi ily inereaeo the weight ofi' the valve. llnrther objects will appear the i erii'ition prejresses, reference being had to 'the aceoinpany/ing drawing, in which my improved 7Jalve is. shown in` central lengitndinal ,Lieetioa Referring; to the drawing, the reference ('ffharaeter l. inilieates a hollow valve stein which in tiareil at one, enil anni eloseil hy a ine/tal llink il, which is hrazeil or otherwise, secured in plaee aa iniiieateil at l. The oppoaite end olf the valve 'teni in tailiereil` as shown at. Seated upon the tapered portion o the Yaive Stein is a. rmliator proviileil 'with a plurality of spared annular riha n, anfl tapered, here l for receiving the. t.-'.nereii joortien o the valve stem, so hat the inner wall of the radiatnr is' in e contaet i portion ot "e, :if/ein ont its length. l A en :iti l 'i rimer-r, iri'an the faire stein :ali-cent he Saunier endet the tapered portion. The metal'washer 51 the threaded Stud i' and renti; i adjacent end of the radiator, hei place by a nut 9. The nat. l? ia i, with a slot l0 for receiving` a i-e'ter if 'which extends through a sni''ahle the threaded stud and locke 1li-.e nin, 'inf place. At. l2 have. inilicaed an anna roove, which is adapted. lo reeeire mechanism for actuating the valve 4 l preferably const-reet the valve heacl and stein ot' my improved valve roin steel steel alloys, and the, radiator from ahw nlnn.l By using aluminum tor the r: the weight of the valve is liet matera K creased, which is of considerable me l cal importance. Aluminum., lievvererq a co-etlicient of expansion approxi twice that et' steel or the steel alleys; l Qrefer to employ, and consequently n. in use the valve Stein and radiator heated, the radiator expanilsin aia. approximately twice the iliametrical iQion of the valve stem. This would establish a minute air-spaee-hetwe valve stein and the radiator, n'iiieh impede the conduction ot' the. heat it valve stein to the radiator. al the time, however, that the radiator exp; diameter,l it also expands or incijeae length. Inasmueh as the end of the rae.; adjacent the smaller end olf' the taper( 'l tion of the valve stem is helrl by `which acts as an abutment :or tine the valvel` the expansion mast neef' all take place toward the larger en@ o tapered portion. This inean's that e the length of the radiator bore smaller tions ot' the loore are urged toward la portions of the tapered part of the. i stein, thereby maintaining 'the inici' of the radiator in intimate conta valve stem and com ensetine; lfer thev r ences in expansion etween the valve eein and the radiator.

Having thus leseribed my invention.) what claim as new and desire eeea're ley Letters Patent of the United States l. A 'valve eomprisin a hollow end of Said stem bein "ered to i low head and the ot ier end et being tapered in combination wiwi taehahle radiator having; a la seating on the tapered portion i anil a nut ai the smaller enil ot' the lr portion of Said valve stom having; scrovv'-A thi'cxnlcd onffzw'eineni', with :anni valve-:5min

- n n n i l and bearing ngnn: said radiator, the metal of said rindiuiol.' having :L larger :o-eiiioient tor having :i tapered borosonting on said tnpercd portion, :ind :in abutment adjustably. secured to Suid stein at tho snmiler 0nd of said tapered portion, bearing against said radiator, the metal oif said radiator buying :i hirger Cooiiciont of eXpnnSion 'lmn Hw mom] of said who sioni.

3. A miro comprising :i iwi stom har ing n tapered portion in c'oinbinzliioi'i with :in aluminum radiator inning n iripcrod boro sou'zing on tim tapored portion oi' lsaid miro.

In witnevss whereof, l horvllnto Sinisi-Vibo 20 my nainio this 21st du); of Doccinbor, 1017.

ARTHUR DDY.

VitnesSos 

